Oil well pumping string tubular extension for increasing oil to salt water ratio

Abstract

A Venturi type tube is coaxially connected with the depending end of an oil well pumping string for installation in a producing oil well for increasing the ratio of oil to salt water obtained from the well.

I claim: 
     
       1. In combination with a pump equipped tubing string within a casing for use in conjunction with an oil well having an upper oil producing formation and a lower salt water producing formation, the improvement comprising: an elongated open end tube coaxially connected with the depending end of said tubing string, the tube having an elongated wall perforated reduced diameter portion intermediate its ends;   a packer surrounding said tube below its reduced diameter portion and sealing with the inside surface of said casing; and   at least two open end pipes, each pipe having one end portion secured within one of the perforations in said tube reduced diameter portion and the other open end portion of the pipe being disposed within the opening extending through a portion of the reduced diameter portion of the tube, the fluid passing from the reduced diameter portion of the tube resulting in a pressure reduction causing fluid to be drawn through the perforations in the tube and through the pipes and into the tube opening.   
     
     
       2. The combination of claim 1 wherein the reduced diameter portion of the tube is further defined as being positioned on the tube such that the tube reduced diameter portion is disposed within the upper oil producing formation of the well during the operation. 
     
     
       3. The combination of claim 1 wherein a portion of each pipe, generally near the open end, extends upwardly in a direction substantially coaxial with respect to the longitudinal axis of said tube.